gnubiff is a mail notification program that checks for mail and displays headers when new mail has arrived. gnubiff features include:* Multiple mailbox support* pop3, apop, imap4, mh, qmail and mailfile support* SSL certificates support* GNOME support with complete integration to panel* GTK stand-alone support* Support for the system tray* Support for running without GUI or X* Automatic detection of mailbox format* Mail header content display* IDLE state support for imap4* FAM support for mh/qmail/mailfile* PNG animation support* Highly configurable* HIG 2.0 compliance* Small memory usage